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Title:
LOUDSPEAKER DIAPHRAGM AND LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2019/237606
Kind Code:
A1
Abstract:
A loudspeaker diaphragm and a loudspeaker. The loudspeaker diaphragm comprises a thermoplastic polyester elastomer film layer (11), the thermoplastic polyester elastomer being a copolymer composed of a polyester hard segment A and a polyether or an aliphatic polyester soft segment B, wherein the vitrification transformation temperature of the thermoplastic polyester elastomer film layer (11) ≤20℃, while the thermal plasticity temperature is 50℃-200℃. Using the described thermoplastic polyester elastomer film layer enables a loudspeaker diaphragm to have good flexibility, while being highly reliable and being durable, thus increasing the damage resistance capabilities of a loudspeaker.

Inventors:
WANG TING (CN)
ZHAO GUODONG (CN)
ZHU JIE (CN)
LI CHUN (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2018/110165
Publication Date:
December 19, 2019
Filing Date:
October 13, 2018
Export Citation:
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Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/10; B32B7/12; B32B27/08; B32B27/36; B32B33/00; H04R9/02; H04R9/06
Foreign References:
CN105188000A2015-12-23
CN105188000A2015-12-23
CN202652511U2013-01-02
CN108551640A2018-09-18
CN108551641A2018-09-18
CN108551642A2018-09-18
CN108551643A2018-09-18
CN108566608A2018-09-21
CN108668205A2018-10-16
CN108966088A2018-12-07
CN109005487A2018-12-14
EP0360061A21990-03-28
US20130259291A12013-10-03
Other References:
See also references of EP 3809715A4
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